Number of allowed domains times 2?

Question - why is the allowed domains for a client or reseller seem to be set times 2? I have, for example a reseller with 10 allowed domains. He sets up a client with 1 allowed domain, but upon saving, the 1 is changed to 2 and the reseller stats shows 2 domains used. If I try and set it to 1 for the client, ISPConfig says that I cannot.

Whenever you create a web site www.domain.com, the Co-Domain domain.com is added automatically, so that 2 domains are used. You can delete the Co-Domain (you also have to delete it from the recycle bin), and then you can decrease the domain limit to 1.

Whenever you create a web site www.domain.com, the Co-Domain domain.com is added automatically, so that 2 domains are used. You can delete the Co-Domain (you also have to delete it from the recycle bin), and then you can decrease the domain limit to 1.

Partly symantecs I suppose, but with the current 'definition' of a domain in ISPConfig, I need to double what I want for resellers - If I want them to have 10 domains (using my definition), then I need to allocate them 20 in ISPConfig....